QQMain

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class QQMain extends JFrame implements KeyListener,ActionListener{

    //用于传递数据的组件

    JTextField txtMess = new JTextField();

    JTextArea txtContent = new JTextArea();

    //构造方法

    QQMain(){

        //窗体基本信息

        this.setSize(800 , 900);

        this.setLocationRelativeTo(null);

        this.setTitle("Talking.GHOUL");

        //logo设置

        //设置窗体LOGO

        this.setIconImage(this.getToolkit().getImage("D:/lab_2/psb (11).jpg"));

        //new组件

        txtMess.setFont(new Font("", 0, 36));

        txtContent.setFont(new Font("", 0, 36));

        txtContent.setEditable(false);

        JButton btnSend = new JButton("Send");

        btnSend.setFont(new Font("Courier",  Font.BOLD, 26));

        JComboBox cmbUser = new JComboBox();

        //注册事件监听

        btnSend.addActionListener(this);

        //设置滚动条

        JScrollPane spContent = new JScrollPane(txtContent);

        //布置小面板

        JPanel panSmall = new JPanel();

        panSmall.setLayout(new GridLayout(1 , 2));

        panSmall.add(cmbUser);

        panSmall.add(btnSend);

        //布置大面板

        JPanel panBig = new JPanel();

        panBig.setLayout(new GridLayout(2 , 1));

        panBig.add(txtMess);

        panBig.add(panSmall);

        //设置大面板

        panBig.setPreferredSize(new Dimension(200 , 100));

        //布置窗体

        this.setLayout(new BorderLayout());

        this.add(spContent , BorderLayout.CENTER);

        this.add(panBig , BorderLayout.SOUTH);

    }

    public static void main(String[] args){

        QQMain w = new QQMain();

        w.setVisible(true);

    }

    @Override

    public void keyPressed(KeyEvent arg0){

    }

    @Override

    public void keyReleased(KeyEvent arg0){}

    @Override

    public void keyTyped(KeyEvent arg0){}

    @Override

    public void actionPerformed(ActionEvent arg0){

        //System.out.println(arg0);

        if(arg0.getActionCommand().equals("Send")){

            String mess = txtMess.getText();

            txtMess.setText("");

            txtContent.append(' '+mess+'\n');

        }

    }

}